System.Data.SQLite.SQLiteCommand.ExecuteNonQueryAsync C# (CSharp) Method

        public Task<int> ExecuteNonQueryAsync()
        {
            return __command.ExecuteNonQueryAsync ();
        }

        public async void AddPremiumPlayerAsync(string ip, Guid guid)
        {
            await Connection.OpenAsync();

            // Check if the player already has an entry
            SQLiteCommand command = new SQLiteCommand("SELECT COUNT(*) FROM premium WHERE GUID = $guid");
            command.Parameters.AddWithValue("$guid", guid.ToString("N"));

            long count = (long)await ExecuteScalarAsync(command);

            if (count == 1)
            {
                command = new SQLiteCommand("UPDATE premium SET ip = $ip, timestamp = datetime('now') WHERE GUID = $guid");
                command.Parameters.AddWithValue("$guid", guid.ToString("N"));
                command.Parameters.AddWithValue("$ip", ip);
                command.Connection = Connection;
                await command.ExecuteNonQueryAsync();
            }
            else
            {
                command = new SQLiteCommand("INSERT INTO premium(IP, GUID) VALUES ($ip, $guid)");
                command.Parameters.AddWithValue("$guid", guid.ToString("N"));
                command.Parameters.AddWithValue("$ip", ip);
                command.Connection = Connection;
                await command.ExecuteNonQueryAsync();
            }

            Connection.Close();
        }